Allicdata Part #: | 296-47453-ND |
Manufacturer Part#: |
ISO1212DBQ |
Price: | $ 0.00 |
Product Category: | Isolators |
Manufacturer: | Texas Instruments |
Short Description: | INDUSTRIAL IOGeneral Purpose Digital Isolator 2500... |
More Detail: | N/A |
DataSheet: | ISO1212DBQ Datasheet/PDF |
Quantity: | 24580 |
Series: | ISO121x |
Packaging: | Tube |
Part Status: | Active |
Technology: | Capacitive Coupling |
Type: | General Purpose |
Isolated Power: | No |
Number of Channels: | 2 |
Inputs - Side 1/Side 2: | 0/2 |
Channel Type: | Unidirectional |
Voltage - Isolation: | 2500Vrms |
Common Mode Transient Immunity (Min): | 25kV/µs |
Data Rate: | 4Mbps |
Propagation Delay tpLH / tpHL (Max): | 140ns, 15ns |
Pulse Width Distortion (Max): | -- |
Rise / Fall Time (Typ): | 3ns, 3ns |
Voltage - Supply: | 2.25 V ~ 5.5 V |
Operating Temperature: | -40°C ~ 125°C |
Mounting Type: | Surface Mount |
Package / Case: | 16-SSOP (0.154", 3.90mm Width) |
Supplier Device Package: | 16-SSOP |
Base Part Number: | ISO1212 |
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1. Describe
The ISO1211 and ISO1212DBQ devices are isolated 24V to 60V digital input receivers conforming to IEC 61131-2 Type 1, 2, and 3 characteristics. These devices support 9V to 300V DC and AC digital input modules in programmable logic controllers (PLCs), motor control, grid infrastructure, and other industrial applications. Unlike traditional optocoupler solutions with discrete, imprecise current-limiting circuits, ISO121x devices provide a simple, low-power solution with precise current-limiting for designing compact, high-density I/O modules. These devices do not require field-side power and can be configured to provide or receive input. ISO121x devices operate from a 2.25V to 5.5V supply range and support 2.5V, 3.3V, and 5V controllers. ±60V input tolerance and reverse polarity protection help ensure input pins are protected from faults with negligible reverse current. These devices support data rates up to 4 Mbps and minimum pulse widths of 150 ns for high-speed operation. The ISO1211 device is ideal for designs that require channel-to-channel isolation, while the ISO1212 device is ideal for multi-channel space-constrained designs. Compared to traditional solutions, ISO121x devices reduce component count, simplify system design, improve performance, and reduce board temperature.
2. Feature
1. Complies with IEC 61131-2; Class 1, 2, 3 characteristics for 24V isolated digital inputs
2. Supports 9V to 300V DC and AC digital input designs using external resistors
3. Accurate current limit for low power consumption:
– Type 3 is 2.2 mA to 2.47 mA
– Adjustable to 6.5 mA
4. No field-side power supply required
5. High input voltage range with reverse polarity protection: ±60 V
6. Wire break detection (see TIDA-01509)
7. Configurable as source or sink input
8. High data rate: up to 4 Mbps
9. Enable pin multiplexed output signal
10. High transient immunity: ±70kV/µs CMTI
11. Wide supply range (VCC1): 2.25 V to 5.5 V
12. Ambient temperature range: –40°C to +125°C
13. Compact package options:
– Single channel ISO1211, SOIC-8
– Dual channel ISO1212, SSOP-16
14. Safety related certifications:
– Basic insulation according to DIN VDE V 0884-11
– UL 1577 Listed, 2500-VRMS Insulation
– IEC 60950-1, IEC 62368-1, IEC 61010-1 and GB 4943.1-2011 certification
3. Application
1. Programmable Logic Controller (PLC)
– Digital input modules
– Mixed I/O modules
2. Motor drive I/O and position feedback
3. CNC control
4. data collection
5. Binary input module
4. Pin configuration
5. Pin Description
6. Function Description
The ISO1212DBQ device accepts 24V to 60V digital input signals and provides isolated digital outputs. An external resistor RSENSE connected between the INx and SENSEx pins sets the current limit drawn from the field input. An internal voltage comparator connected to the SENSEx pin determines the input voltage transition threshold. The output buffer on the control side can provide enough current to drive the status LED. The EN pin is used to enable the output buffer. A low state on the EN pin places the output buffer in a high impedance state. ISO121x devices are capable of operating at speeds up to 4 Mbps.
7. Application Information
The ISO1211 and ISO1212DBQ devices are fully integrated isolated digital input receivers conforming to IEC 61131-2 Type 1, 2, 3 features. These devices are suitable for high channel density, digital input module programmable logic controllers, and motor control digital input modules. These devices accept 24V to 60V digital input signals and provide isolated digital outputs. No field-side power supply is required. An external resistor, RSENSE on the input signal path precisely sets the current limit drawn from the field input. This current limit helps minimize power dissipation in the system. Current limit can be set for Type 1, 2 or 3 operation. This voltage transition threshold conforms to Types 1, 2 and 3 and can be further increased using an external resistor, RTHR.
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